feat: add code block line wrap toggle

Adds a chat code block wrap toggle in markdown code block headers
Persists and restores the setting across desktop/web settings
Adds localized labels and OpenChamber search entry for the new option

packages/ui/src/lib/api/types.ts

@@ -645,6 +645,7 @@ export interface SettingsPayload {
   showOpenCodeUpdateNotifications?: boolean;
   openCodeUpdateToastDismissedVersion?: string;
   showToolFileIcons?: boolean;
+  codeBlockLineWrap?: boolean;
   showTurnChangedFiles?: boolean;
   showExpandedBashTools?: boolean;
   showExpandedEditTools?: boolean;